\documentclass[twoside,openright,12pt,A4paper]{book}
\usepackage[includeheadfoot,a4paper,inner=3.81cm,outer=2.54cm,top=2.54cm,bottom=2.54cm,pdftex]{geometry}
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\usepackage{umacthesis}
\usepackage{indentfirst}
%\usepackage[printonlyused]{acronym}
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\newlength{\blankofApprovedby}
\newlength{\blankofDate}
\newpage
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\onehalfspacing
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\input{Acronyms}

\begin{document}
\input{Cover}
\input{Accessary}
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\pagenumbering{roman}
\pagestyle{umpreliminary}
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\cleardoublepage
\input{Index}
\thispagestyle{umpreliminary}
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\cleardoublepage
\input{Acknowledgements}
\thispagestyle{umpreliminary}
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\cleardoublepage
\pagenumbering{arabic}
\pagestyle{umplain}
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\newgeometry{includehead, inner=3.81cm,outer=2.54cm,top=2.54cm,bottom=2.54cm} 
%%==============
%\theoremstyle{definition}
%\newtheorem{defn}{Definition}[section]
%\newtheorem{conj}{Conjecture}[section]
%\newtheorem{exmp}{Example}[section]
%\theoremstyle{theorem}
%\newtheorem{thm}{Theorem}[section]
%\newtheorem{lem}[thm]{Lemma}
%\newtheorem{prop}[thm]{Proposition}
%\newtheorem*{cor}{Corollary}
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\newcommand{\norm}[1]{\left\lVert#1\right\rVert}
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\doublespacing
\makeatletter
\renewcommand\chapter{\if@openright\cleardoublepage\else\clearpage\fi
	\thispagestyle{umempty}
	\global\@topnum\z@
	\@afterindentfalse
	\secdef\@chapter\@schapter}
\makeatother
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\thispagestyle{umempty}
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\input{Chapter/chapter1}
\input{Chapter/chapter2}
\input{Chapter/chapter3}
\input{Chapter/chapter4}
\input{Chapter/chapter5}
\input{Chapter/chapter6}
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\small\singlespacing\clearpage\phantomsection
\addcontentsline{toc}{chapter}{BIBLIOGRAPHY}
\renewcommand\bibname{BIBLIOGRAPHY}
\bibliography{Reference}
\bibliographystyle{ieeetr}
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\appendix
\renewcommand{\appendixname}{Appendix}
\titlecontents{chapter}[0pt]{\normalsize}{\MakeUppercase{Appendix} \thecontentslabel: }{}{\titlerule*[1em]{.}\contentspage\hspace*{0pt}}[]
\input{Chapter/appendix1}
\input{Chapter/appendix2}
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\input{Chapter/publications}
\end{document}